2 years ago

Which statement about the lines is true?

Mathematics

1 answer:

Novay_Z [31]2 years ago

5 0

C. Got you man.

Lemme know if I’m right

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What is 5x+7y+8z-2x+3y+5-z

DochEvi [55]

$5x+7y+8z-2x+3y+5-z = 3x+10y+7z+5$

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3 years ago

What’s the vertex form of F(x)=x^2+2x-3

kupik [55]

Answer:

$\large\boxed{f(x)=(x+1)^2-4}$

Step-by-step explanation:

$\text{The vertex form of a quadratic equation}\ f(x)=ax^2+bx+c:\\\\f(x)=a(x-h)^2+k\\\\(h,\ k)-\text{vertex}\\=====================================$

$\bold{METHOD\ 1:}\\\\\text{convert to the perfect square}\ (a+b)^2=a^2+2ab+b^2\qquad(*)\\\\f(x)=x^2+2x-3=\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-3\\\\f(x)=(x+1)^2-4\\==============================$

$\bold{METHOD\ 2:}\\\\\text{Use the formulas:}\ h=\dfrac{-b}{2a},\ k=f(k)\\\\f(x)=x^2+2x-3\to a=1,\ b=2,\ c=-3\\\\h=\dfrac{-2}{2(1)}=\dfrac{-2}{2}=-1\\\\k=f(-1)=(-1)^2+2(-1)-3=1-2-3=-4\\\\f(x)=(x-(-1))^2-4=(x+1)^2-4$

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3 years ago

The Davidson family wants to expand its regular patio which currently measures 15 ft by 12 ft they want to expand the length and

Juli2301 [7.4K]

Answer:

L and W +5

Step-by-step explanation:

A1=15*12=180

A2=160+A1=340

340 factors

340,1,2,170,5,..., 20,17

20*17=340

|15-20|=5

|12-17|=5

add 5

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2 years ago

What is the pattern between 1/4, 1/2, 3/4, and 1

bagirrra123 [75]

Answer:

Adding 1/4 each time

Step-by-step explanation:

1/4+1/4=1/2

1/2+1/4=3/4

3/4+1/4=1

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3 years ago

A box of Great Value crackers is $1.97 and contains 27 servings. What is the price per EACH serving?

nlexa [21]

.07 dollars or 7 cents

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2 years ago